Sievert is calculated by multiplying gray by which factor?

Sievert is calculated by multiplying gray by which factor?

• A. Radiation weighting factor
• B. Absorbed dose factor
• C. Dose conversion factor
• D. Exposure factor

Answer: (A)

Sievert measures the biological effect of radiation, so it starts from the absorbed dose in gray (Gy) and is adjusted by a factor that accounts for how damaging the specific type of radiation is. This adjustment is the radiation weighting factor. Different radiations have different potential to cause biological harm, so multiplying the absorbed dose by this weighting factor converts it into an equivalent dose in sieverts. For example, gamma rays or X-rays have a weighting factor of 1, so 1 Gy of gamma radiation equals 1 Sv. Alpha particles have a much higher weighting factor (about 20), so 1 Gy of alpha radiation would be about 20 Sv in equivalent dose. The other terms listed aren’t used for this conversion: absorbed dose factor isn’t a standard multiplier, dose conversion factor isn’t the specific multiplier for this purpose, and exposure factor relates to exposure in air, not the biological effect captured by the sievert.

Sievert measures the biological effect of radiation, so it starts from the absorbed dose in gray (Gy) and is adjusted by a factor that accounts for how damaging the specific type of radiation is. This adjustment is the radiation weighting factor. Different radiations have different potential to cause biological harm, so multiplying the absorbed dose by this weighting factor converts it into an equivalent dose in sieverts.

For example, gamma rays or X-rays have a weighting factor of 1, so 1 Gy of gamma radiation equals 1 Sv. Alpha particles have a much higher weighting factor (about 20), so 1 Gy of alpha radiation would be about 20 Sv in equivalent dose. The other terms listed aren’t used for this conversion: absorbed dose factor isn’t a standard multiplier, dose conversion factor isn’t the specific multiplier for this purpose, and exposure factor relates to exposure in air, not the biological effect captured by the sievert.